/// <summary>
/// 对ins进行GZip解压，输出到outs
/// </summary>
/// <param name="inStream"></param>
/// <param name="outStream"></param>
/// <returns></returns>
public static void GZipDecompress(Stream inStream, Stream outStream)
{
var inGZipStream = new GZipStream(inStream, CompressionMode.Decompress, true);
StdioUtil.CopyStream(inGZipStream, outStream);
inGZipStream.Close();
}
/// <summary>
/// 对ins解压，输出到outs
/// </summary>
/// <param name="inStream"></param>
/// <param name="outStream"></param>
/// <returns></returns>
public static void Decompress(Stream inStream, Stream outStream)
{
var iis = new InflaterInputStream(inStream);
StdioUtil.CopyStream(iis, outStream);
iis.Close();
}
/// <summary>
/// 对ins进行GZip压缩，输出到outs
/// </summary>
/// <param name="inStream"></param>
/// <param name="outStream"></param>
/// <returns></returns>
public static void GZipCompress(Stream inStream, Stream outStream)
{
var gzipStream = new GZipStream(outStream, CompressionMode.Compress, true);
StdioUtil.CopyStream(inStream, gzipStream);
gzipStream.Close();
}
/// <summary>
/// 对data从offset开始，长度为len进行GZip解压，输出到outs
/// </summary>
/// <param name="data"></param>
/// <param name="offset"></param>
/// <param name="length"></param>
/// <param name="outStream"></param>
/// <returns></returns>
public static void GZipDecompress(byte[] data, int offset, int length, Stream outStream)
{
var inGZipStream =
new GZipStream(new ByteInputStream(data, offset, length), CompressionMode.Decompress, true);
StdioUtil.CopyStream(inGZipStream, outStream);
inGZipStream.Close();
}
/// <summary>
/// 对ins进行level级别压缩，输出到outs
/// </summary>
/// <param name="inStream"></param>
/// <param name="level"></param>
/// <param name="outStream"></param>
/// <returns></returns>
public static void Compress(Stream inStream, int level, Stream outStream)
{
var deflater = new Deflater();
if (level >= 0 && level <= 9)
{
deflater.SetLevel(level);
}
var deflaterOutputStream = new DeflaterOutputStream(outStream, deflater, 4 * 1024);
StdioUtil.CopyStream(inStream, deflaterOutputStream);
deflaterOutputStream.Finish();
}